Mechanical manometer



FIG. 1 is a perspective view of a mechanical manometer, showing my newdesign;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken line showing of the mechanical manometer is for the purposeof illustrating article and forms no part of the claimed design.

CLAIM The ornamental design for a mechanical manometer, as shown anddescribed.